The B chain is a galactose-specific lectin that facilitates the binding to the cell membrane that precedes endocytosis.

In the N-terminal section; belongs to the ribosome-inactivating protein family. Type 2 RIP subfamily.

547 amino acids

MKFETTKNKLHGNAYYQAQFQDPIKFTTGSATPASYNQFIDALRERLTGGLIYGIPVLRDPSTVEKPNQYVTVELSYSDTVSIQLGIDLTNAYVVAYRAGSESFFFRNAPASASTYLFTGTQQYSLPFDGNYDDLEKWAHQSRQRISLGLEALRQGIKFLRSGASDDEEIARTLIVIIQMVAEAARFRYVSKLVVISLSNRAAFQPDPSMLSLENTWEPLSRAVQHTVQDTFPQNVTLINVRQERVVVSSLSHPSVSALALMLFVCNPLNATQSPLLIRSVVEQSKICSSHYEPTVRIGGRDGLCVDVSDNAYNNGNPIILWKCKDQLEVNQLWTLKSDKTIRSKGKCLTTYGYAPGNYVMIYDCSSAVAEATYWDIWDNGTIINPKSGLVLSAESSSMGGTLTVQKNDYRMRQGWRTGNDTSPFVTSIAGFFKLCMEAHGNSMWLDVCDITKEEQQWAVYPDGSIRPVQNTNNCLTCEEHKQGATIVMMGCSNAWASQRWVFKSDGTIYNLYDDMVMDVKSSDPSLKQIILWPYTGNANQMWATLF

61.2 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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